Weather station Crookes radiometer

This radiometer is also known as a light mill or solar mill.

The "mill blades" are light on one side and dark on the other. While the light surfaces reflect the sun's rays, the dark surfaces absorb the heat. Which way will the light mill turn? Find out for yourself.

The glass radiometer is approximately 19 cm high and has a diameter of 6 cm. It is packaged in sturdy, padded packaging.

Note: The radiometer is made of thin glass. For this reason, it is not a children's toy!